John r



(Model.)

J. R. GOEHRING.

INJEOTDR.

Patented July 16,v 1889.

Ill/l @u gg m m W W SLW.

N. PETERS. PlwtLilhographer, Washnglun. llc.

UNITED STATES PATENT OFFICE.

JOHN R. GOEIIRING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HENRY BELFIELD AND T. BROVN BELEIELD, OF SAME PLACE.

INJECTOR.

SPECIFICATION forming part of Letters Iatent No. 407,197, dated July 16, 1889.

Application led December 3, 1888. Serial No. 292,492. (Model.)

To all whom z' ntf/fj concern.-

Be it known that I, JOHN R. GOEHRING, a citizen of the United States, and a resident of Philadellihia, Pennsylvania, have invented certain Iniprovements in Injectors, of which the following is a specification.

The objects of my invention are to simplify and eheapen the construction of theinjector, to provide for the successive operation of the lifting and forcing jet-s by the movement of one handle, and to permit the ready adjustment of said handle to the most convenient position. These objects I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure l Ais a longitudinal section of an inj ector constructed in accordance with my invention, the valves being in such position that steam is cut off from both the lifting and forcing jets. Fig. 2 is a detached view of the valve mechanism, showing the parts in position for admitting steam to the lifting.

jet. Fig. 3 is a similar view showing the valves in position for admitting` steam to both the forcing and lifting jets. Fig. 4 is an enlarged sectional plan view of the valves. Fig. 5 is a transverse section on the line l 2, Fig. l.

A is the casing of the injector, with steaminlet branch B, water-inlet branch D, and annular overflow-chamber E, the whole being east in one piece and having an internally-threaded end for the reception of the cap F. A partition a separates the steam and water chambers, and has an internallythreaded opening for the reception of the forcing-jet tube G, the combining-tube Il, having a flanged end threaded for adaptation to an internally-threaded annular rib h in the casing, and the delivery-tube J, likewise having a threaded flange for adaptation to an internal thread in the casing, while beyond the delivery-tube the casing is again threaded for the reception of a spider K, having a guide for the stem of the check-valve d, which closes the end of the delivery-tube. By this means expensive joints in the easing of the injector are entirely dispensed with,

and said casing is adapted for the reception of the various internal parts of the injector by the comparatively cheap and simple operations of boring and threading the casing atthe points where these internal parts are to be fitted thereto, the combining-tube, delivery-tube, and spider being introduced from the forward or delivery end of the casing and the forcing-j et tube from the rear end.

The rear or steam-receiving end of the forcing-j et tube G forms a seat for a valve f, which is tubular and has a forwardly-projecting tube g, hereinafter termed the liftingjet tube,this tube being suitably guided by wings v', adapted to the bore of the forcingjet tube G.

The enlarged tubular rear end of the valve f has an internal seat for the reception of a valve m, which is secured to or forms part of a stem m, the latter being adapted to an opening in the end of the operating-spindle M, and having a slight longitudinal play on said spindle, this play being in the present instance restricted by a transverse pin n, carried by the spindle and adapted to an opening of somewhat greater diameter in the stem of the valve, as shown more clearly in Eig. 4.

The spindle M passes through a stuffing-box 011 the cap l of the injector and has at its inner end a flange s, which by contact with a cap p, closing the open rear end of the tubular valve jf', causes rearward movement of said valve.

In the valve f, around the chamber in which the valve m works, are openings, so that steam always has free access to the chamber behind the valve m, the pressure of steam always tending to keep the valves f and m to their seats, except when they are positively withdrawn by the action of the spindle M. It will therefore be seen that when the handle N, to which the spindle M is connected, is first drawn back in the direction of its arrow, Eig. l, the effect will be to open the valve m and permit steam to enter the lifting-jet tube y, as shown in Fig. 2, the line jet of steam from said tube escaping into the combiningtube and forming therein and in the waterchamber of the supply-pipe of the injector a partial vacuum, so that the water will rise in said supply-pipe and fill the water and overflow chambers of the injector, the water escaping from the usual overliow-nozzlel),com-

IOO

It is hereby certified that the naine of the last-mentioned assignee in Letters Patent No. Ll()7,l97, granted July 16, 1889, upon the application of.; John R. Goehring, ot' Philadelphia, Pennsylvania, for un improvement in Injeetors,77 was erroneously written und printed f T. Brown Beltield, that seid neme should have been Written i and printed T. Broom Belfield; and that the said Letters Patent should be rend With this correction therein that the saine muy contorni to the record of the oase in the g Patent Office.

Signed, oountersigned, und sealed this 23d dzty of July, A. D. 1889.

[SEAL] GYRUS BUSSEY,

Assistant Secretary of the Interior.

l i m. C p (Jounteiblgned. o 2;; C. E. MITCHELL,

CJ Commissionero'Patems. o 

